摘要
将结构静力弹塑性分析与地震反应谱结合起来的Pushover方法是一种简单有效的结构抗震能力评定方法,已在我国逐渐得到推广应用。依据该法基本原理,对上海高宝大厦的巨型框筒结构进行罕遇地震下的抗震分析,得到性能点处的层剪力、层间位移角曲线和塑性铰分布。计算结果表明,该结构符合"强柱弱梁"的原则,能满足大震不倒的设防要求。
Pushover method as a combination of nonlinear static analysis and seismic response spectrum is a simple and effective tool for the assessment of structural seismic capacity. It is being gradually put into practice in China. This paper presents a brief introduction to pushover analysis. A mega-frame tube structure, the Gao Bao building in Shanghai, was analyzed by nonlinear static analysis under strong earthquake. The diagrams of story shear, storey drift angle and the distribution of plastic hinges at performance point were obtained. The results show that the behavior of the structure matches the principle of strong-column-weak-beam and it will not collapse under strong earthquake.
出处
《结构工程师》
2007年第5期5-9,共5页
Structural Engineers
基金
上海市建设技术发展基金(编号:Y0402105)
关键词
巨型框筒
PUSHOVER分析
罕遇地震
结构抗震性能
mega-frame tube structure, pushover analysis, strong earthquake, seismic capacity of structure
